The four story floor to ceiling house has a bathroom on the third floor

After reading your supplementary explanation, it is safe to say: it is more troublesome.

The bathroom floor is generally 2-3CM lower than the indoor floor, and the walls around it are generally concrete upper and lower walls, the purpose is to limit the water to the toilet in the case of water leakage such as the rupture of the water pipe and the failure of the faucet to be closed, and the floor drain can be eliminated in time to avoid affecting the surrounding rooms. When building a house, the drainage pipes and water inlet pipes are arranged according to the specified position, usually in the corner of the bathroom, and waterproof.

Now add a bathroom, it can be done, but there are hidden dangers.

If you want to do it, then there are a few things to pay attention to:

1. It is best to do 2 times waterproof in the bathroom, waterproof up and over one person high, and the door stone must be handled well to avoid water seepage through the door stone.

2. The slope of the bathroom floor should be slightly larger, so that the water can be discharged through the floor drain in time.

3. It is best to use PPR hot water pipes for the inlet pipe, which is installed outside and goes through the roof. After installation, be sure to test the pressure.

Concealed installation can also be beautiful, but it is troublesome to repair. Before painting walls and tiles, be sure to test the pressure of the pipes. The shower area must be a little closer to the floor drain location.

4. The sewer pipe must be caulked, cleaned up after the hole is opened on the floor, and the waterproof coating is brushed and the membrane is pasted. Wire threads and use moisture-proof sockets.

5. The distance from the sewer pipe to the main sewer pipe should not be too long, otherwise it is easy to be blocked.

6. The downstairs room is beautiful, and it is best to have a ceiling, and a partial ceiling can also be used. It is best to have a suspended ceiling, because the additional bathroom may not have windows, so it is necessary to open the door frequently for ventilation. It is best to be able to + windows.

7. Do a good job of acceptance and test the water before putting it into use.

The decoration is smooth, the material is my standard mid-range, the estimated cost is about 7000, of course, you can also save, but the waterproof part can not be saved.

It's not troublesome, as long as the wall is made and the pipes are arranged. Two or three thousand yuan [plumbing labor, ordinary materials 600-800, toilet, bathtub about 1,000,000,] If the bathroom is rebuilt, additional artificial materials will be added.

It's just that it's a little troublesome to take over, and the others are very easy, estimated at about 5,000 yuan.